Machine



T. H. CUSHING; SAWING MACHINE.

No. 60,621. Patented Dec. 18, 1866.

niteh tat es gaunt @ffi IMPROVEMENT IN sAwnIc MACHINES.

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TO ALL WHOM IT MAY CONCERN: g

Be it known that I, T. H. CUsnrNs, of Dover, in the county of Stafiord, and State of New Hampshire, have invented a new and improved Sawing Machine; and I do hereby declare that thefollowing is a full," clear, and exact description,- which will enable others skilled in the art to make and use the same, reference being had to the'aocompanying drawings, forming part of this specification, in which- Figure 1 is a side view-of my invention.

Figure 2, an end sectional view of the same taken in the linexz, fig. 1; and

Figure 3, a horizontal section of the same taken in the line 3/ y, fig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to a new and improved machine for I sawing timber in curved form, such as, is used for ships, bridges, &c., &'c,

The invention consists of two or morereciprocating saws, rotary planet-is, and a bed or carriage which moves in the arc of a circle, all arranged to operate in the manner as hereinafter fully shown and described, whereby the work may be done in an ea zpeditiousi andperfect manner, the reciprocating saws cutting the curved sides of the stick, and the planers finishing orsmoothing the same, and the bedypr carriage rendered capable of being gigged back with tlie greatestfnciiity. s

A represents a framing which may be constructed inany proper manner to support the working parts of the machine, and Bis a driving shaft placed on the upper part of one end of the framing, and having two pulleys, C D, upon it. E is a shaft-placed on the-upper part of the framing at its opposite end, and driven from the shaft B by a belt, F. The shaftE is provided at each endwith a crank-pulley, G, from which a saw sash or gate, H, is operated by rods, I I. This saw-sash or gate may be constructed and arranged in the usual manner, working on guides, a, attached to the framing 'A. In the present instance four saws, J, are shown,

fitted in the sash or gate H, two to work at each side of the stick, the saws cutting a slab and a board from eacli 7 side of the stick. K. represents a carriage or bed on which the stick to be sawed (shown in red) isplaced; The carriage or bed is of curved form longitudinally corresponding to the curvaturein which the stick is to he sawed, and said carriage or bedis fitted and works upon curvcd ways or guides, b, secured horizontally-in the framing.

The carriageor bed, K, is moved along and the log fed to the saws by means ,of a chain or cord, M, the ends of whichare attached to the ends of the carriage or bed, said chain or cord passing around a pulley, N, on a shaft, Q, placed transversely in the framing A, and receiving its motion bymeans of a toothed wheel, '0, which is on one end, gearing intoa pinion, d, on a shaft, P, the latter receiving its motion by means of af belt, e, from a,

shaft, Q, in the upper part of the framing, and Q receiving its motion by a belt, 1, from shaft E. The shaft 0 has a pulley, 9, upon it adjoining the toothed wheel 0, and a belt, 7:, passes around g, and a pulley on h ft Q,

R is a friction-pulley fitted in the lower end of a pendent swinging frame,.S, which is adjusted by a lever, T. When-the log isbeing fed to the saws J, the belt his loose, the friction-pulley Rnot bearing or pressing against it, the carriage orbed being moved through the medium of the chain or c0rd, M, from shaft 0, the latter being rotated from shaft P, through the medium ofthe gearing c d. When the log is to be gigged back, the lever T is moved so as to cause the pulley R to bear or press against the belt h, and the latter is then made to rotate" shaftO in a reverse direction; the pinion d on shaft P being thrown outof gear with 'c by means f th lever T actuating or letting down, when adjusted to throw R in contact with h, the bearing a"? of the end of the shaft P, on which the pinion d is fitted, the outer end of the bearing a* being bevelled and resting on a shoulder, 5*,

on lever T.v By this arrangement it will be seen that the log,'by a'very simple manipulation, maybe gig ed back; At each side-of the ways or guides 6, on which the carriage or bed works, there is a taper-bar or block,

- U, shown clearly in fig. These taper-bars or blocks serve to force off the boards. and slabs cut by the saws J.

In the framingA, at the rear part thereof, there are placed two sliding or adjustable frames, V V, in which vertical rotary laners, W, are fitted. By means of the adjustable frames Vythic planet's W may be placed at a greater or less distance apart, to suit the width of the sticli'to be sawcd.- Thcse;-planer s,,are rotated by belt 1,, from ashaft X, in the front part of the framing, said shaft receiving its motion from the driving shaft B by means of a belt, j, Y isa pressure-roller which bears upon the stick to be sawed, just at the rear of the saws J. Thispressure-roller is fitted in afork, Z, secured to the lower end of a spiral spring, K, whi h i attached t a.

vertical slide, Z, fitted in the front end of the frammgA. The pressure of the roller Y on the stick may he graduated as desired by adjusting the slide Z higher or lower, through the medium of a screw, Z, or other suitable device.' I would remark that the carriage or bed, K, may be fitted or placed on guides, I), of different curvatures to suit the curve in which it is designed to saw the stick or piece of timberyand that the carriage or bed may be moved from shaft 0 by means of a rack and pinion, instead of the chain or cord Mfand pulley N.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

I 1. The combination of reciprocating saws J, With rotary planets W W, arranged with a carriage or bed K: placed on curved ways or guides b, for the purpose of sawing and planing sticks in curved form simultaneously "or at one operation, substantially as shown and described.

2. The friction-roller attached to the pendent swinging frame S, which is connected to the lever T, as shown, in connection with the two shafts o P, provided withthe gears c d, the belt h, and the adjustable bearing (1*, of the shaft P, arranged with lever T, to operate substantially as and for the purpose specified.

3, The taper-blocks U, when used in connection with a carriage or bed K, Working on curved ways or guides 12, and reciprocating saws J,- substantially as and for the purpose set forth.

T. H. CUSHING.

Witnesses:

WM. F. MONAMARA, ALEX. F. Rosnn'rs. 

